Udemy_106_ArrayList_Grocery

//Main
package com.company;

import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    private static Scanner scanner = new Scanner(System.in);
    private static GroceryList groceryList = new GroceryList();

    public static void main(String[] args) {
        boolean quit = false;
        int choice;
        printInstructions();

        while (!quit) {
            System.out.println("Enter your choice!");
            choice = scanner.nextInt();
            scanner.nextLine();
            switch (choice) {
                case 0:
                    printInstructions();
                    break;
                case 1:
                    groceryList.printGroceryList();
                    break;
                case 2:
                    addItem();
                    break;
                case 3:
                    modifyItem();
                    break;
                case 4:
                    removeItem();
                    break;
                case 5:
                    searchForItem();
                    break;
                case 6:
                    quit = true;
                    break;
            }
        }
    }

    public static void printInstructions() {
        System.out.println("0 - options");
        System.out.println("1 - list");
        System.out.println("2 - add items");
        System.out.println("3 - modify items");
        System.out.println("4 - remove items");
        System.out.println("5 - search for item");
        System.out.println("6 - quit");
    }

    public static void addItem(){
        System.out.print("Pls add the grocery item:");
        groceryList.addGroceryItem(scanner.nextLine());
    }

    public static void modifyItem(){
        System.out.print("Enter item number: ");
        int number=scanner.nextInt();
        scanner.nextLine();
        System.out.print("Enter replacement item:");
        String repItem=scanner.nextLine();
        groceryList.modityGroceryItem(number-1,repItem);
    }

    public static void removeItem(){
        System.out.print("Enter item number:");
        int number=scanner.nextInt();
        scanner.nextLine();
        groceryList.removeGroceryItem(number);
    }

    public static void searchForItem(){
        System.out.println("Item to search for");
        String itemSearch=scanner.nextLine();
        if(groceryList.findItem(itemSearch)!=null){
            System.out.println("Found "+itemSearch+" in the list");
        } else System.out.println(itemSearch+" is not in the list");
    }
}

//Class
package com.company;

import java.util.ArrayList;

public class GroceryList {
    private ArrayList<String> groceryList= new ArrayList<>();

    public void addGroceryItem(String item) {
        groceryList.add(item);
    }

    public void printGroceryList(){
        System.out.println("You have "+groceryList.size()+" in your grocerylist");
        for (int i = 0; i < groceryList.size(); i++) {
            System.out.println((i+1)+". "+groceryList.get(i));
        }
    }

    public void modityGroceryItem(int position, String newItem){
        groceryList.set(position,newItem);
        System.out.println("Grocery item "+(position+1)+" has been modified");
    }

    public void removeGroceryItem(int position) {
        String theItem = groceryList.get(position);
        groceryList.remove(position);
    }

    public String findItem(String serachItem){
       // boolean exists=groceryList.contains(serachItem);
        int position=groceryList.indexOf(serachItem);
        if (position>=0) return groceryList.get(position);
        return  null;
    }
}